Find the value of this expression if x = 9.
x2 – 9
x – 7

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

How do i solve uniform motion problems?

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?